Ottawa Region Masonry Contractors Association

Ottawa Reiki InService Project

Ottawa Scientific Equipment Manufacturing Inc.

Ottawa Senators Alumni Association

Ottawa Sport Parachutists Inc.

Ottawa Structural Concrete Services Limited

Ottawa Systems Incorporated

Ottawa Thermal Pane Manufacturer & Distributor Inc.

Ottawa Tree & Landscaping Inc.

Ottawa Valley Crafters (o.v.c.) Inc.

Ottawa Valley Golf Association

Ottawa Valley Wild Bird Care Centre

Ottawa WaterWalkers Water Polo Club

Ottawa-Gatineau Climbers' Access Coalition

Ottawa-Hull Photo Minutes Inc.

Ottawamortgagesolutions.com Inc.

Ottworth Holdings Ltd.

Otus Op-X Inc.

OTUS Strategic Financial Business Planning Inc.

OTUS Technical Services Ltd.